Our kitchen sink stopped draining. No amount of lye, Draino, etc. helped. When we unhooked things underneath, we saw nothing so followed the line to the basement. I unscrewed a small round plug on the side of the pvc pipe and a gusher of dirty water fell out. After reconnecting it and replacing the p trap, the sink still doesn’t drain. I’m again draining the basement line and think the issue must be between there and the sink. Should I just buy an augur and run it up from the basement opening? If not, what can I do? Thank you so, so much!